Counterion-induced ucst for polycations

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August undefined, 2024

WebFeb 3, 2024 · The UCST is shifted to higher temperatures by increasing the polymer concentration and molecular weight, and by decreasing the NaCl concentration. The UCST behavior was measured ranging the polymer concentrations from 0.5 to 5.0 g/L. Describe practical implications of this paper What are the key takeaways? Explain the abstract in … WebReversibility of the Counterion-Induced UCST-transitionIV, V 59 4.4. Effect of LiNTf 2 on LCST BehaviorIII, V 60 4.4.1. NTf 2 and PDMAEMA-1 at ... V.; Tenhu, H. Counterion-Induced UCST for Polycations. Macromolecules 2014, 47, 7581-7587. V Karjalainen, E.; Aseyev, V.; Tenhu, H. Upper or lower critical solution temperature, or both? Studies on ...

How to manipulate the upper critical solution …

WebA method to promote upper critical solution temperature (UCST) type of behavior for polycations is introduced. This relies on in situ introduction of a hydrophobic anion to an … WebCounterion-induced UCST behaviour of polyelectrolytes The solution properties of polyelectrolytes are affected not only by the counterions present but also by the addition of salts; that is the introduction of more or different counterions. hal ps2

Counterion-Induced UCST for Polycations - figshare.com

WebMar 10, 2024 · Karjalainen E, Aseyev V, Tenhu H (2014) Counterion-induced UCST for polycations. Macromolecules 47:7581–7587. Article CAS Google Scholar Wu Y, Wang X, Ling Y, Tang H (2015) Preparation and thermoresponsive properties of helical polypeptides bearing pyridinium salts. RSC Adv 5:40772–40778 WebOct 28, 2014 · A method to promote upper critical solution temperature (UCST) type of behavior for polycations is introduced. This relies on in situ introduction of a hydrophobic anion to an aqueous solution of a polycation in the presence of sufficient ionic strength. WebSimilar observations have been made for other polycations with counterion induced UCST type phase transitions. 49 Fig. 5 LCST type cloud point temperature as a function of salt concentration for 1 mg mL −1 solution of PC4N in NaPS solution ( ), in NaPS with 250 mM NaCl ( ), in NaCl ( ), in NaNO 3 with 250 mM NaCl ( ), in Na 2 HPO 4 ( ), in Na ... burlington industries inc v ellerth summary

Counterion-Induced UCST for Polycations — University of …

Counterion-Induced UCST for Polycations - NASA/ADS

WebJun 13, 2013 · Counterion-Induced UCST for Polycations. Macromolecules 2014, 47 (21) , 7581-7587. DOI: 10.1021/ma501924r. Hu Zhang, Xia Tong, and Yue Zhao . Diverse … WebMar 5, 2014 · PDMAEMA has a well-known LCST behavior which can be modulated by the counterion. It was observed that the hydrophobic NTf 2 anion not only decreases the cloud point of PDMAEMA but also triggers an upper critical solution temperature (UCST) type behavior in acidic pH. burlington industries inc. v. ellerth 1998WebUnexpected aqueous UCST behavior of a cationic comb polymer with pentaarginine side chains burlington industries philippines inc

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Counterion-induced ucst for polycations

Thermoresponsive Polycation-Stabilized Nanoparticles …

Webadshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A WebA series of thermoresponsive ureido-derivatized polymers were synthesized via atom transfer radical polymerization (ATRP) and a post-modification process. All of the …

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WebIn chemistry, a counterion (sometimes written as "counter ion", pronounced as such) is the ion that accompanies an ionic species in order to maintain electric neutrality. In table salt … WebDec 11, 2024 · It was demonstrated for the first time that the characteristic dimensions of the nanopattern could be tuned in situ by the pH- and induced UCST thermoresponsiveness of PDMAEMA, which provides a novel bottom-up strategy to create and control polymeric nanostructures in an aqueous environment. Poly(N,N-dimethylaminoethyl methacrylate) …

Thermoresponsive polymers comprise the bulk of the stimuli-responsive polymers studied. Two very well-known examples of thermoresponsive polymers are polystyrene in cyclohexane and poly(N-isopropyl acrylamide) (PNIPAM) in water. Both undergo a change in their solubility with increasing the … See more In order to understand how the UCST behavior can be tuned to specific applications, we need to examine the mechanisms of dissolution, and how UCST systems are different from LCST systems. In aqueous … See more There are only a few known polymers that exhibit UCST behavior at temperatures between 0 and 100 °C (Fig. 3). PNAGA is the most studied of these and controlled polymerization using both RAFT (reversible addition … See more Recently Bertrand et al. reported on the thermoresponsive behavior of poly(TEMPO methacrylate) (PTMA) in alcohol–water solutions (Fig. 11). The cloud point … See more WebCounterion-Induced UCST for Polycations A method to promote upper critical solution temperature (UCST) type of behavior for polycations is introduced. This relies on in situ introduction of a hydrophobic anion to an aqueous

WebMar 7, 2024 · It has been known that some polyelectrolyte systems, e.g., betaine polymer and polycations, have an upper critical solution temperature (UCST) in water while … WebApr 22, 2024 · In our recent studies, we have shown that the solubility of polycations in water can be changed with various salts. Depending on the cationic moiety and the …

Webtitle = "Counterion-Induced UCST for Polycations", keywords = "CRITICAL-SOLUTION TEMPERATURE, FRAGMENTATION CHAIN TRANSFER, POLYMERIC IONIC … burlington industries philippinesWebT1 - Counterion-Induced UCST for Polycations. AU - Karjalainen, Erno. AU - Aseyev, Vladimir. AU - Tenhu, Heikki. PY - 2014. Y1 - 2014. N2 - A method to promote upper crit. … burlington industries llcWebMar 10, 2024 · In EtOH/H 2 O solvent mixtures, P1 showed UCST-type phase behaviors at f w = 40 or 85–95% (Table 3 ). The maximum polymer concentration ( C m) of P1 was 1 mg mL −1. In comparison, P2 and P3 also showed reversible UCST-type phase behaviors in EtOH/H 2 O solvent mixtures at f w = 80–95% (Table 3 ). halp us jon carryWebCounterion-Induced UCST for Polycations Author: Karjalainen Erno, Aseyev Vladimir, Tenhu Heikki ... Abstract: A method to promote upper critical solution temperature … halp teams appWebMay 18, 2024 · Counterion-Induced UCST for Polycations. Article. Nov 2014; Erno Karjalainen; Vladimir Aseyev; Heikki Tenhu; A method to promote upper critical solution temperature (UCST) type of behavior for ... halp theseusWebCounterion-Induced UCST for Polycations Erno Karjalainen, Vladimir Aseyev, Heikki Tenhu Department of Chemistry Polymers Research output: Contribution to journal › Article › Scientific › peer-review Overview Fields of Science CRITICAL-SOLUTION TEMPERATURE FRAGMENTATION CHAIN TRANSFER POLYMERIC IONIC LIQUIDS PHASE … burlington industries pahlavi rugsWebDec 20, 2016 · Abstract and Figures. In this mini-review, we discuss multi-stimuli-responsive polymers, which exhibit upper critical solution temperature (UCST) behavior mainly in aqueous solutions. Firstly, we ... burlington industries v. ellerth case 20.3